Originally Posted by jyasaki
That's pretty surprising. And somewhat sobering.
Are you sure you didn't get hold of a couple of tanks of that Brazilian E85?
Hard to believe that fuel line wouldn't stand up to fuel for a year.
Hola Jyasaki & 9D280, In Peru we don't use ethanol/methanol mixed gasoline as as in Brasil, just standard gasoline mainly good quality 90/95 octane with normal cleaning aditives, works perfect in my other engines, the only difference is the color hose, gray for Mariner/Mercury, black and thick for the other Tohatsu's.
Bottom line: If any Ribnet user, uses Quicksilver brand Tanks with gray soft hose be aware you might experience the same problem, your engine will appreciate the precaution of having change it on time, so do you. This is just a plain expeculation, as I don't know if the bad quality hose has been replaced in newer Mariner/Mercury engines models.
Thanks all for the answers trying to figure out what might have been the probably cause of the failure.